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New Retumbo Powder

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  #8  
Unread 01-04-2012, 07:52 AM
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Re: New Retumbo Powder

Agreed. For me both H1000 and Retumbo are running hotter then the older lots and my load data has changed as a result.

JeffVN
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  •   #9  
    Unread 01-04-2012, 09:56 AM
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    Re: New Retumbo Powder

    I have new lots of Retumbo that are definitely different from an older lot., couple of years. Using my 6.5x284, the older lot would produce 2965 FPS with 59gr. Two different new lots produce 3015 fps with the same charge. It is consistently 50-60 FPS faster. No pressure signs, and my groups are just slightly larger, by .25MOA or a little less. Though it might be my chronograph, but the difference on the readings are consistant between the old and new lots.
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      #10  
    Unread 01-04-2012, 10:09 AM
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    Re: New Retumbo Powder

    How recently purchased is this 'hotter' Retumbo?

    I've got a keg that's nearly two years old that I need to replace soon and am wondering if I might see the same thing.
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      #11  
    Unread 01-04-2012, 11:00 AM
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    Re: New Retumbo Powder

    Quote:
    Originally Posted by jmden View Post
    How recently purchased is this 'hotter' Retumbo?

    I've got a keg that's nearly two years old that I need to replace soon and am wondering if I might see the same thing.
    Just over the last 6 months.
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      #12  
    Unread 01-04-2012, 01:24 PM
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    Re: New Retumbo Powder

    I noticed the change in Retumbo as well.
    I had a 94.0gr load in 300 RUM that is now at 91.5gr otherwise I get stuck cases.

    The old lot was 4779 bought in 2010 and the new lot is 4838 bought early 2011.
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      #13  
    Unread 01-04-2012, 07:59 PM
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    Re: New Retumbo Powder

    The load in my 300 RUM dropped 3.5 grains to produce the same result. On the can it lists 101.5 grains for the 180 grain bullet and 98.5 is now max in my rifle. 102 was my previous accuracy load. My 200 grain AB load dropped 4 grains. Old H-870 would change 2-3 grains sometimes lot to lot and you just come to expect it but first time I have seen it in Retumbo which I have been using since it was introduced.
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